/diy/ - Do It Yourself

Anonymous Sat Aug 29 06:23:29 2020 No.1898111 [View]
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>>1898095
Orange wires go into bridge rectifier+caps then into CN12, marked +7L and VSL. This tells us that is a +7V supply rail. When rectifing ac the resulting dc is Vdc=sqrt(2)*Vac, so Vac=7/1,41=4,96.
Same for yellow/green line, rectifier>caps>regulator=15V, 15/1,41=10,6. In this case Vyellow is actually grater than 10 to compensate for the drop voltage of regulator, but just 1-2 V, but 10 is fine for a ballpark estimate.

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/diy/ - Do It Yourself

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